Equisetum

Distribution Map: Based on vouchered plant specimens only. View county names by placing the mouse cursor over a particular county.

Contains 12 accepted taxa overall.

Family:	Equisetaceae
Common Name:

Classification

Division	Equisetophyta
Class	Equisetopsida
Sub Class	Equisetidae
Order	Equisetales
Family	Equisetaceae
Genus	*Equisetum*

Citation

Citation	**
Basionym:	**
Type:	**

** Not applicable or data not available.

Species

Scientific Name	Common Name	Status
Equisetum arvense	field horsetail, common horsetail	Native, Persisting, S5 (State Rank), CoC: 2
Equisetum arvense × E. fluviatile = E. ×litorale	shore horsetail	Native, Persisting, SNA (State Rank), GNA (Global Rank)
Equisetum fluviatile	river horsetail	Native, Persisting, S5 (State Rank), G5 (Global Rank), CoC: 4
Equisetum hyemale × E. laevigatum = E. ×ferrissii	Ferriss’s scouring rush	Native, Persisting, SNA (State Rank), GNA (Global Rank)
Equisetum hyemale × E. variegatum = E. ×trachyodon	Mackay’s scouring rush	Native, Persisting, SNA (State Rank), GNA (Global Rank)
Equisetum hyemale ssp. affine	common scouring rush	Native, Persisting, S5 (State Rank), G5T5 (Global Rank), CoC: 2
Equisetum laevigatum × E. variegatum = E. ×nelsonii	Nelson’s scouring rush	Native, Persisting, SNA (State Rank), GNA (Global Rank)
Equisetum palustre	marsh horsetail	Native, Persisting, S2 (State Rank), G5 (Global Rank), CoC: 5
Equisetum pratense	meadow horsetail	Native, Persisting, S2 (State Rank), G5 (Global Rank), CoC: 4
Equisetum scirpoides	dwarf scouring rush	Native, Persisting, S5 (State Rank), G5 (Global Rank), CoC: 9
Equisetum sylvaticum	wood horsetail	Native, Persisting, S5 (State Rank), G5 (Global Rank), CoC: 7
Equisetum variegatum ssp. variegatum	variegated scouring rush	Native, Persisting, S4 (State Rank), CoC: 3

For more information, contact: David Werier or Kyle Webster

Web Development: USF Water Institute

A member of the University of South Florida family of PlantAtlas.org sites

Citation Information:

Werier, David, Kyle Webster, Troy Weldy, Andrew Nelson, Richard Mitchell†, and Robert Ingalls†. 2024 New York Flora Atlas. [S. M. Landry and K. N. Campbell (original application development), USF Water Institute. University of South Florida]. New York Flora Association, Albany, New York.

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Definition: Vouchered Specimen

A voucher specimen is a pressed and thoroughly dried plant sample deposited in a herbarium, and is intended to be a permanent record supporting research purposes. A voucher may be a record of a plant's occurrence in a particular area, or a specific example of a plant used in a scientific investigation.

Proper vouchers display all the necessary attributes for complete identification of the plant, and are to be accompanied by accurate locality, habitat, collection time, and collector data.

Only plant populations vouchered by specimens deposited in Index Herbariorum (http://sweetgum.nybg.org/science/ih/) recognized herbaria are represented on this map.